6 sentences

1. 他是国家公认的开国功臣。

   tā shì guó​jiā gōng​rèn de kāi​guó gōng​chén.

   He is a nationally recognized founding father of the country.

   Source: Dong Chinese Dictionary

2. 陈朝的开国皇帝是陈霸先。

   Chén cháo de kāi​guó huáng​dì shì Chén Bà​xiān.

   The founding emperor of the Chen Dynasty was Chen Baxian.

   Source: Dong Chinese Dictionary

3. 全国人民热烈庆祝开国大典。

   quán guó rén​mín rè​liè qìng​zhù kāi​guó dà​diǎn.

   The people of the whole country warmly celebrated the founding ceremony of the PRC.

   Source: Dong Chinese Dictionary

4. 他是一位久经沙场的开国名将。

   tā shì yī wèi jiǔ jīng shā​chǎng de kāi​guó míng​jiàng.

   He was a battle-hardened famous general of the founding era.

   Source: Dong Chinese Dictionary

5. 西汉开国功臣张良被封为留侯。

   Xī Hàn kāi​guó gōng​chén Zhāng Liáng bèi fēng​wéi Liú Hóu.

   Zhang Liang, a founding official of the Western Han Dynasty, was enfeoffed as the Marquis of Liu.

   Source: Dong Chinese Dictionary

6. 全城的人都聚集在这里参加这场开国盛典。

   quán chéng de rén dōu jù​jí zài zhè​lǐ cān​jiā zhè cháng kāi​guó shèng​diǎn.

   People from all over the city gathered here for the grand national founding ceremony.

   Source: Dong Chinese Dictionary